OlUKXrAl. ('()LLKMH()r,A. 9.'? 



length to the unoittbritoii as 4 : 3. The iiincrones small, ;\niie(l 

 with a curved terminal tooth, a single dorsal tooth and a hasnl 

 spiniforni tooth (fig. 54). 



Coloration. — Ground-colour of the body and furcula varies 

 from whitish to dull ochre-yellow; the legs, antennsF, and cercus 

 bluisli-violet. The eyes on a black patch on each side of the 

 head. The ground-colour of the body varies according to whether 

 the specimens have been denuded of tlieir scales or not. 



Length varying from 1-5 -2'5 mm. (excluding cei'cus) ; average 

 length 2 mm. 



Tliirteeu specimens, taken under dead leaves nt Calcutta 

 (Indian Musemn Collector, Jan. 14th-20th, 1908, and Feb. IHth. 

 1910). 



Xo. , ." Indi:ui Museum Coll. 



lb 



Siib-fam. Entomobryin.^-; Schjifl". 

 (jeuus IsoTOMURUS Born. 



Isotomnrns Biirner, " Neue altw. Collem., nebst Bemerk. z. 

 Syst. der Isotom. und Entomob.," Sitz. Gesell. naturf. Freunde zu 

 Berlin, 1903, p. 129. 



* IsOTOMURUS PALUSTRIS Midi. (PI. YI. ficr. If)- p] yjj 



figs. 21, 22.) 



tSyn. 1776. Podura pahtMris Miiller, Zool. Ihin. Prodr.. 

 Havnia?, p. 184. 



1873. Isotoma palastris Lubbock, Monogr. Coll and Thys 

 p. 169. 



ITead. — The ei/es eight in number on each side (fig. 22). 



Antennce. — A little longer than the thorax, the joints related 

 proportionately in length as 4 : 8 : 9 : 9 (in one example thev 

 were i-elated as 3:6:7:8). 



Trunk. — Clothed with plumose hairs. Tlie third abdominal 

 segment a little longer than the fourth. 



Ft(rcida.^-As long as, or a little longer than the antennae ; 

 reaching to the ventral tube. The denies approximately twice 

 the lengtli of the mamthrium. 



Coloration. — Ochre-yellow, either with or without a few small 

 irregular scattered black markings on the dorsal aspect, whicli 

 coalesce in some specimens to form blotches. The antenna and 

 furcula paler; the antennte in two examples tinged with pui-ple. 



Length 2 mm. 



Ten specimens, taken on the surface of water at Calcutta j 

 {Indian Museum Collector, Sept. 1st, 1908, and Sept. 22nd, 1909). 



No. -tV- Indian Museum Coll. 

 It) 



The specimens agree in all essential details of structure with 



European forms of the species. 



t I. palustris has been previously recorded from the Orientiii region hv Bflrner 

 from Java. * ' 



